A pool cleaning robot

Abstract

The embodiment of the application provides a pool cleaning robot, which comprises a shell, an electrically sealed cabin and a suction assembly arranged in the inner cavity of the shell, a water inlet structure and a water outlet structure arranged on the shell, the water inlet structure and the water outlet structure being communicated with the inner cavity and the outside respectively, and the water outlet structure being arranged on the upper part of the shell; the suction assembly comprises a motor mounting seat, a water pump motor, an impeller and an impeller cover; the motor mounting seat is connected with the shell and is provided with a motor mounting part; the water pump motor is fixed to the motor mounting seat through the motor mounting part, and the driving shaft of the water pump motor is connected with the impeller; the impeller cover is connected with the motor mounting seat and covers the impeller, and the water outlet structure and the motor mounting part are coaxially arranged, and the axis of the motor mounting part is rear inclined from bottom to top relative to the vertical direction, so that the water flow driven by the impeller is obliquely discharged towards the back of the pool cleaning robot. The pool cleaning robot provided by the application can maximize the conversion of water flow energy into backwash force.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment, and more particularly to a swimming pool cleaning robot. Background Technology

[0002] A pool cleaning robot is a cleaning device used to clean the underwater parts of a swimming pool and filter the water. The robot's shell has an inlet and an outlet, and an internal water channel connecting the inlet and outlet. The water channel contains a filter basket and a water pump impeller assembly. Driven by the water pump impeller, pool water is drawn in through the inlet, flows through the filter basket, and is discharged from the outlet.

[0003] Currently, some pool cleaning robots have their water outlets tilted so that the water flows outwards and upwards. For example, the opening at the water outlet is tilted, or a tilted guide is installed at the water outlet. This improves the smoothness of the pool cleaning robot's movement and its ability to adhere to the pool surface through the recoil force of the tilted water flow.

[0004] However, while the above-mentioned method of adjusting the direction of the water flow by setting an inclined water guide structure at the outlet can change the direction of the water flow, some of the kinetic energy of the water flow will be consumed due to the collision and impact of the water flow with the inclined water guide structure at the outlet, the increased side length of the water flow path, and the increased friction loss, which weakens the reaction force of the water flow. Utility Model Content

[0005] In view of this, embodiments of this application provide a pool cleaning robot to at least partially solve the above-mentioned problems.

[0006] According to a first aspect of the embodiments of this application, a swimming pool cleaning robot is provided. The swimming pool cleaning robot includes a housing, an electrical sealing chamber disposed within the inner cavity of the housing, and a suction assembly. The housing is provided with a water inlet structure and a water outlet structure, which are respectively connected to the inner cavity and the outside. The water outlet structure is disposed on the upper part of the housing. The suction assembly is disposed independently of the electrical sealing chamber. The suction assembly includes: a motor mounting base, a water pump motor, an impeller, and an impeller cover. The motor mounting base is connected to the housing, and the motor mounting base... The mounting base is provided with a motor mounting part; the water pump motor is fixed to the motor mounting base through the motor mounting part, and the drive shaft of the water pump motor is connected to the impeller; the impeller cover is connected to the motor mounting base, and the impeller cover covers the impeller, and the impeller cover is provided with a water passage structure; the water outlet structure and the motor mounting part are coaxially arranged, and the axis of the motor mounting part is inclined from bottom to top towards the tail of the casing relative to the vertical direction, so that the impeller can drive the water flow to be discharged from the water outlet structure towards the rear of the pool cleaning robot at an incline.

[0007] In one possible implementation, the motor mounting portion extends along the height direction of the motor mounting base, and the height of the motor mounting portion decreases along the direction from the head to the tail of the housing.

[0008] In one possible implementation, the motor mounting base further includes: a base and a support portion connected to the base; the base is set at the same height, and the motor mounting portion is disposed on the base along the height direction of the base; the height of the support portion decreases along the direction from the head to the tail of the housing, and the support portion is connected to the housing.

[0009] In one possible implementation, the base is a columnar structure, the motor mounting part includes a mounting groove and a connecting structure, the mounting groove is arranged along the height direction of the columnar structure, the connecting structure is disposed at the end of the columnar structure and is close to the opening of the mounting groove, the water pump motor is installed in the mounting groove, and the water pump motor is connected to the connecting structure.

[0010] In one possible implementation, the support includes multiple legs, a portion of which is disposed on a first side of the base, and another portion of which is disposed on a second side of the base, the first side and the second side being opposite sides; the legs on the same side are arranged along a preset direction, and the support height of the legs on the same side gradually decreases along the preset direction; the height shape of the legs on the first side and the height shape of the legs on the second side are symmetrically arranged; the legs are connected to the housing; wherein the first side and the second side correspond to the left and right sides of the housing, respectively, and the preset direction is the horizontal direction of the housing from head to tail.

[0011] In one possible implementation, the support leg is a plate-shaped support leg, and there are two plate-shaped support legs. The two plate-shaped support legs are respectively disposed on the first side and the second side. Each plate-shaped support leg extends along the preset direction, and the surface height dimension of each plate-shaped support leg gradually decreases along the preset direction.

[0012] In one possible implementation, a gap is provided between the support leg on the first side and the support leg on the second side to form a water passage between the two support legs, and the water inlet structure is located on the water guide path of the water passage; the motor mounting base further includes: a flow guide surface; the flow guide surface is connected to the support leg and is disposed at the water outlet of the water passage; the flow guide surface extends from the side of the support leg near the water outlet in a direction away from the water passage.

[0013] In one possible implementation, the motor mounting part is disposed on the top of the motor mounting base, and the side wall of the motor mounting base is provided with a plurality of guide ribs, the plurality of guide ribs being arranged circumferentially along the side wall of the motor mounting base, and each guide rib extending from the bottom of the motor mounting base toward the motor mounting part.

[0014] In one possible implementation, the impeller shroud includes a guide section and a fixing section, and the motor mounting base is provided with an impeller shroud connecting section; the guide section is a downward-opening cylindrical shape, the lower part of the guide section is configured as a grid as the water inlet of the water passage structure, and the top of the guide section is provided with multiple through holes as the water outlet of the water passage structure, the through holes penetrating the upper and lower surfaces of the top of the guide section; the fixing section is provided on the outer side of the guide section, and the fixing section is connected to the impeller shroud connecting section.

[0015] In one possible implementation, the motor mounting part includes a motor mounting shaft, and the motor mounting part is disposed on the motor mounting base at an angle with the motor mounting shaft extending in an inclined direction, wherein the inclined direction is inclined from bottom to top relative to the vertical direction toward the tail of the housing.

[0016] According to the embodiments of this application, the swimming pool cleaning robot includes a housing, an electrical sealing chamber and a suction assembly disposed within the inner cavity of the housing. The housing is provided with a water inlet structure and a water outlet structure, which are respectively connected to the inner cavity and the outside. The water outlet structure is disposed on the upper part of the housing. The suction assembly is disposed independently of the electrical sealing chamber. The suction assembly includes: a motor mounting base, a water pump motor, an impeller and an impeller cover. The motor mounting base is connected to the housing and is provided with a motor mounting part. The water pump motor is fixed to the motor mounting base through the motor mounting part, and the drive shaft of the water pump motor is connected to the impeller. The impeller cover is connected to the motor mounting base and covers the impeller. The impeller cover is provided with a water passage structure. The water outlet structure and the motor mounting part are coaxially arranged, and the axis of the motor mounting part is inclined from bottom to top towards the rear of the housing relative to the vertical direction, so that the impeller can drive the water flow to be discharged from the water outlet structure towards the rear of the swimming pool cleaning robot. The aforementioned technical solution, which tilts the entire suction device, creates a direct, unobstructed, and shortest inclined water guide channel between the suction device and the outlet structure. From the source of the water channel's agitation, it provides inclined vortex guidance power to the water flow within the channel, minimizing kinetic energy loss when the water collides with the guide shape and reducing dynamic friction loss before the water is ejected at an angle. This allows the water, driven by the impeller, to be discharged unobstructed along the inclined axis towards the rear of the pool cleaning robot, enhancing the propulsive effect of the water flow's recoil force. This significantly improves the robot's adhesion stability to the pool walls and bottom, and optimizes its driving efficiency and mobility reliability when climbing slopes and walls. Compared to existing technologies, this solution avoids the impact loss of water flow on the outlet structure, maximizing the retention of water kinetic energy converted into recoil force, thus enabling reliable, precise movement and efficient cleaning of the pool cleaning robot. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the external structure of a pool cleaning robot provided in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the internal structure of a pool cleaning robot provided in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of a suction component provided in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the overall structure of a motor mounting base provided in an embodiment of this application;

[0022] Figure 5 This is a side view of a motor mounting bracket provided in an embodiment of this application. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions in the embodiments of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art should fall within the protection scope of the embodiments of this application.

[0024] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0025] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0026] As mentioned earlier, a pool cleaning robot is a cleaning device used to clean the underwater parts of a swimming pool and filter the water. The robot's casing has an inlet and an outlet, and an internal water channel connecting the inlet and outlet. This channel contains a filter basket and a water pump impeller assembly. Driven by the water pump impeller, pool water is drawn in through the inlet, flows through the filter basket, and is discharged through the outlet. Currently, some pool cleaning robots have an angled outlet design to direct the water flow upwards and backwards. This can be achieved by tilting the outlet opening or using an angled guide at the outlet. The recoil force of the angled water flow enhances the robot's smoothness of movement and its ability to adhere to the pool surface. However, while the above-mentioned method of adjusting the direction of the water flow by setting an inclined water guide structure at the outlet can change the direction of the water flow, some of the kinetic energy of the water flow will be consumed due to the collision and impact of the water flow with the inclined water guide structure at the outlet, the increased side length of the water flow path, and the increased friction loss, which weakens the reaction force of the water flow.

[0027] This application provides a swimming pool cleaning robot, which includes a housing, an electrical sealing chamber and a suction assembly disposed within the inner cavity of the housing. The housing has a water inlet structure and a water outlet structure, which are respectively connected to the inner cavity and the outside. The water outlet structure is located on the upper part of the housing. The suction assembly is disposed independently of the electrical sealing chamber. The suction assembly includes: a motor mounting base, a water pump motor, an impeller, and an impeller cover. The motor mounting base is connected to the housing and has a motor mounting portion. The water pump motor is fixed to the motor mounting base via the motor mounting portion, and the drive shaft of the water pump motor is connected to the impeller. The impeller cover is connected to the motor mounting base and covers the impeller, and has a water passage structure. The water outlet structure and the motor mounting portion are coaxially arranged, and the axis of the motor mounting portion slopes backward from bottom to top towards the rear of the housing relative to the vertical direction, so that the impeller can drive water to flow from the water outlet structure towards the rear of the swimming pool cleaning robot at an angle. The aforementioned technical solution, which tilts the entire suction device, creates a direct, unobstructed, and shortest inclined water guide channel between the suction device and the outlet structure. From the source of the water channel's agitation, it provides inclined vortex guidance power to the water flow within the channel, minimizing kinetic energy loss when the water collides with the guide shape and reducing dynamic friction loss before the water is ejected at an angle. This allows the water, driven by the impeller, to be discharged unobstructed along the inclined axis towards the rear of the pool cleaning robot, enhancing the propulsive effect of the water flow's recoil force. This significantly improves the robot's adhesion stability to the pool walls and bottom, and optimizes its driving efficiency and mobility reliability when climbing slopes and walls. Compared to existing technologies, this solution avoids the impact loss of water flow on the outlet structure, maximizing the retention of water kinetic energy converted into recoil force, thus enabling reliable, precise movement and efficient cleaning of the pool cleaning robot.

[0028] The following examples illustrate the pool cleaning robot provided in this application.

[0029] Figure 1 This is a schematic diagram of the external structure of a pool cleaning robot provided in an embodiment of this application. Figure 2 This is a schematic diagram of the internal structure of a pool cleaning robot provided in an embodiment of this application, as shown below. Figure 1-2As shown, the pool cleaning robot 10 includes a housing 11 and an electrical sealing chamber (not shown) and a suction assembly 12 disposed within the housing 11. The inner cavity of the housing 11 includes a water channel and a receiving cavity for installing internal components. The electrical sealing chamber is installed within the receiving cavity, and part or all of the suction assembly 12 is disposed in the water channel. The housing 11 is provided with a water inlet structure (not shown) and a water outlet structure 111. The water inlet structure connects the water inlet end of the water channel to the external environment, and the water outlet structure 111 connects the water outlet end of the water channel to the external environment. A filter device 14 is also provided in the water channel of the housing 11. The water outlet structure 111 is located at the upper part of the housing 11. The electrical sealing chamber contains at least one or all of the electrical components of the pool cleaning robot 10, such as the main control board, sensors, and sensor control board, which are waterproof and sealed. The suction assembly 12 is disposed independently of the electrical sealing chamber, that is, the suction device 12 is not sealed by the electrical sealing chamber and is independently waterproof and sealed. The suction assembly 12 includes: a motor mounting base 121, a water pump motor (not shown), an impeller (not shown), and an impeller cover 122. The water pump motor is a waterproof motor, or the motor housing is sealed with a waterproof motor shell to isolate the water pump motor from the underwater operating environment. The motor mounting base 121 is connected to the housing 11. Furthermore, when the water outlet structure 111 is located on the upper part of the housing 11 and the pool cleaning robot 10 sprays water upwards, the motor mounting base 121 is connected to the inner bottom of the housing 11, allowing the impeller and impeller cover 122 to be mounted above the motor mounting base 121, close to the water outlet structure 111. The motor mounting base 121 is provided with a motor mounting part 1211 for limiting the installation of the water pump motor. The water pump motor is mounted to the motor mounting base 121 via the motor mounting part 1211. The drive shaft of the water pump motor is connected to the impeller. When assembled, the cylindrical body of the water pump motor, the drive shaft of the water pump motor, and the impeller are assembled coaxially along the axis of rotation of the impeller. The impeller cover 122 is connected to the motor mounting base 121 and covers the impeller. A water-passing structure is provided on the impeller cover 122. This water-passing structure includes a first part located near the impeller's agitation and water-suction direction, and a second part located near the impeller's agitation and water-spraying direction. The second part corresponds to the water outlet structure 111 of the casing 11. For example, according to... Figure 2As shown, the first part of the aforementioned water-passing structure is located on the lower side wall of the impeller shroud 122, and includes a plurality of rectangular elongated through holes arranged circumferentially along the side of the impeller shroud 122. The second part of the aforementioned water-passing structure is located on the top of the impeller shroud 122, and includes a plurality of grid structures distributed on the top of the impeller shroud 122. When the impeller rotates to guide water, the water flow is drawn into the first part by the agitation action of the impeller and sprayed out through the second part. The water outlet structure 111 and the second part are aligned so that the water flow sprayed out by the second part can be sprayed out to the outside of the housing 11 without being blocked by the water outlet structure 111. Exemplarily, the water outlet structure 111 may be a through hole formed on the housing 11 that matches the edge shape of the second part, and the radial dimension of the through hole is close to or slightly larger than the radial dimension of the second part, so as to allow the second part to be exposed to the external environment from the housing 11 (see Figure 1 (As shown in the diagram). The water outlet structure 111 and the motor mounting part 1211 are coaxially arranged, and the axis of the motor mounting part 1211 slopes backward from bottom to top relative to the vertical direction towards the rear of the housing 11. Specifically, the axis of the motor mounting part 1211 refers to the axis of the water pump motor that is mounted and fixed through the motor mounting part 1211. The above arrangement allows the axis of the water pump motor (i.e., the rotation axis of the impeller) to pass through the water outlet structure 111, and the water spray direction when the impeller agitates the water can smoothly pass through the water outlet structure 111 without being blocked by the water outlet structure 111, ensuring that the water pump motor can spray water directly at the water outlet structure 111 when it discharges water. Based on the above structure, when the pool cleaning robot 10 is running, the water pump motor drives the impeller to rotate, and the water in the pool enters the water channel of the housing 11 from the water inlet structure, and is sprayed obliquely from the water outlet structure 111 along the water channel, and is discharged obliquely towards the rear of the pool cleaning robot 10.

[0030] In the above embodiments, the housing 11 is the main outer shell of the pool cleaning robot 10, providing structural support and internal space for the robot. The positions of the water inlet and outlet structures 111 are not limited to those described in the above embodiments. For example, the water inlet structure can be located at the bottom of the housing 11 or on the side wall of the housing 11, allowing pool water to enter the housing 11. The water outlet structure 111 can be located at the top of the housing 11 or at any position from the middle to the top of the side wall of the housing 11, allowing the treated pool water inside the housing 11 to exit the housing 11. There can be a height difference between the water inlet and outlet structures 111, such as an upper and lower arrangement, or they can be at the same height. For example, the water inlet structure can be located on the side of the housing 11 near the head, and the water outlet structure 111 can be located on the side of the housing 11 near the tail, with the water channels arranged from front to back within the housing 11. The aforementioned filtration device 14 is disposed within the housing 11, and is located in the waterway between the water inlet structure and the suction assembly 12. When the pool cleaning robot 10 is working, various solid impurities in the pool will enter the housing 11 along with the pool water through the water inlet structure. The filtration device 14 can intercept and contain these impurities, thereby purifying the pool water. In one example, the filtration device 14 is a filter basket with two layers of filter screens. The primary filter screen has a coarse-pore grid structure to intercept larger particles such as algae and sand. The secondary filter screen is a fine fiber mesh or metal mesh for further filtering suspended particles and fine particulate matter. The electrical sealing chamber is disposed within the housing 11 and consists of one or more sealed compartments, responsible for sealing and installing electrical components such as control circuit boards and sensors. The suction assembly 12 is disposed within the housing 11, in an installation space outside the electrical sealing chamber, and is fixedly installed within the housing 11 via a motor mounting bracket 121.

[0031] Figure 3 This is a schematic diagram of a suction component provided in an embodiment of this application, as shown below. Figure 3 As shown, the suction assembly 12 includes a motor mounting base 121, a water pump motor, an impeller, and an impeller cover 122. The motor mounting base 121 is fixed to the housing 11 at its bottom, providing a stable support point for the entire suction assembly 12. The impeller cover 122 is connected to the motor mounting base 121 and covers the impeller to isolate the impeller from the water channel environment and prevent the impeller from accidentally agitating contaminant fragments. The impeller cover 122 is provided with a water-passing structure. The impeller agitates the water flow to guide the water, causing the water to be sprayed out through the water-passing structure on the impeller cover 122 and discharged outside the housing 11 via the water outlet structure 111.

[0032] Figure 4 This is a schematic diagram of the overall structure of a motor mounting bracket provided in an embodiment of this application, as shown below. Figure 4As shown, a motor mounting portion 1211 is provided on the motor mounting base 121. The motor mounting portion 1211 is a structure for limiting and mounting the water pump motor onto the motor base 121. The shape of the motor mounting portion 1211 is not limited, as long as it can reliably limit the water pump motor onto the motor mounting base 121. For example, the motor mounting portion 1211 may include a receiving groove that allows the column of the water pump motor to be inserted, a bracket structure that can connect and limit the water pump motor, or a flange structure that can be screwed to the water pump motor. The motor mounting portion 1211 is inclined so that when the water pump motor is fixed to the motor mounting base 121 by the motor mounting portion 1211, it is in an inclined posture. The fixed position of the motor mounting base 121 on the housing 11 is determined according to the position of the water outlet structure 111. When assembled, the axis of the water pump motor fixedly mounted via the motor mounting part 1211 is approximately coincident with the axis of the water outlet structure 111. This allows the drive shaft of the water pump motor to extend in an inclined direction and connect with the impeller. The rotation axis of the impeller can then pass through the water outlet structure 111, thereby aligning the spray area of ​​the water pumped by the impeller with the water outlet structure 111. When the impeller blades rotate at high speed, the blades do work on the water, increasing the kinetic energy and pressure of the water. This creates a negative pressure at the water inlet structure, generating a suction force and propelling the water flow unimpeded through the water outlet structure 111 towards the outside of the housing 11.

[0033] In the above embodiment, the axis of the motor mounting part 1211 is inclined from bottom to top and backward relative to the vertical direction toward the tail of the housing 11, so that the axis of the drive shaft of the water pump motor fixed to the motor mounting part 1211 and the rotation axis of the impeller are both inclined from bottom to top and backward toward the tail of the housing 11. Under the negative pressure generated by the rotation of the impeller, the pool water enters the housing 11 through the water inlet structure at the bottom of the housing 11, is filtered by the filter device 14, and is guided to the central suction port of the impeller through the water passage structure on the impeller cover 122. Since the water outlet structure 111 and the motor mounting part 1211 are coaxially arranged, the water flow can directly pass through the water outlet structure 111 and be discharged at an angle toward the tail of the housing 11 after being pressurized and sprayed out by the impeller, without the need for other flow guiding components to adjust the direction of the water flow sprayed to the outside of the housing 11 by blocking the water flow. It should be noted that the head direction of the housing 11 is the forward direction of the pool cleaning robot 10 when cleaning. The suction component 12 causes the water to flow at an angle to the rear of the pool cleaning robot 10. According to the action and reaction forces, the water jetted at the rear will give the pool cleaning robot 10 a force to the front. The horizontal component of this force can increase the driving force of the pool cleaning robot 10 in the pool, propelling the pool cleaning robot 10 forward. The vertical component of this force can increase the adhesion between the pool cleaning robot 10 and the pool bottom, improving the pool cleaning robot 10's ability to adhere to the ground.

[0034] In this embodiment, the pool cleaning robot 10 includes a housing 11, an electrical sealing chamber disposed within the inner cavity of the housing 11, and a suction assembly 12. The housing 11 has a water inlet structure and a water outlet structure 111, which are respectively connected to the inner cavity and the outside. The water outlet structure 111 is located on the upper part of the housing 11. The suction assembly 12 is disposed independently of the electrical sealing chamber. The suction assembly 12 includes a motor mounting base 121, a water pump motor, an impeller, and an impeller cover 122. The motor mounting base 121 is connected to the housing 11 and has a motor mounting portion 1211. The water pump motor is fixed to the motor mounting base 121 via the motor mounting portion 1211, and the drive shaft of the water pump motor is connected to the impeller. The impeller cover 122 is connected to the motor mounting base 121 and covers the impeller. The impeller cover 122 has a water-passing structure. The water outlet structure 111 and the motor mounting part 1211 are coaxially arranged, and the axis of the motor mounting part 1211 is inclined from bottom to top towards the rear of the housing 11 relative to the vertical direction, so that the impeller can drive the water flow from the water outlet structure 111 to be discharged obliquely towards the rear of the pool cleaning robot 10. This allows the water flow to be discharged obliquely towards the rear of the pool cleaning robot 10 without structural obstruction along the inclined axis driven by the impeller, thereby enhancing the propulsive effect of the water flow's recoil force on the pool cleaning robot 10, significantly improving the pool wall and bottom adhesion stability of the pool cleaning robot 10, and optimizing its driving efficiency and mobility reliability when climbing slopes and pool walls. Compared with the prior art, the pool cleaning robot 10 provided by this solution can avoid the impact loss of the water flow on the water outlet structure 111, maximizing the retention of water kinetic energy converted into recoil force, thereby achieving efficient cleaning of the pool.

[0035] In one possible implementation, the motor mounting portion 1211 extends along the height direction of the motor mounting base 121, and the height of the motor mounting portion 1211 decreases along the direction from the head to the tail of the housing 11.

[0036] The motor mounting part 1211 extends along the height direction of the motor mounting base 121, and is inclined. Specifically, the height of the motor mounting part 1211 gradually decreases from the head to the tail of the housing 11, so that when the water pump motor is fixed to the motor mounting base 121 via the motor mounting part 1211, it is in an inclined posture. The drive shaft of the water pump motor extends along the inclined direction and is connected to the impeller, so that the impeller blades drive the water flow to be discharged at an incline towards the rear of the pool cleaning robot 10.

[0037] In this embodiment, the motor mounting part 1211 extends along the height direction of the motor mounting base 121, and the height of the motor mounting part 1211 decreases along the direction from the head to the tail of the housing 11. This provides an inclined mounting position for the water pump motor, causing the axis of the drive shaft of the water pump motor to be inclined, so that the rotation axis of the impeller connected to the drive shaft of the water pump motor is in an inclined state. This guides the water flow from the water outlet structure 111 towards the oblique rear of the pool cleaning robot 10, thereby enhancing the propulsion effect of the water flow back force on the pool cleaning robot 10, significantly improving the adsorption stability of the pool wall and bottom of the pool cleaning robot 10, and optimizing its driving efficiency and mobility reliability when climbing slopes and pool walls.

[0038] In a preferred embodiment, the motor mounting base 121 is tilted, giving the motor mounting portion 1211 an inclined posture, providing an inclined mounting position for the water pump motor. The specific structure of the motor mounting base 121 is described below:

[0039] Figure 5 This is a side view of a motor mounting bracket provided in an embodiment of this application, as shown below. Figure 5 As shown, the motor mounting base 121 also includes a base 1212 and a support portion 1213 connected to the base 1212. The base 1212 is set at a uniform height, with no significant height change along the direction from the head to the tail of the housing 11. The motor mounting portion 1211 is disposed on the base 1212 along the height direction of the base 1212. The height of the support portion 1213 decreases along the direction from the head to the tail of the housing 11. The support portion 1213 is connected to the housing 11, so that the overall structure of the motor mounting base 121 has an inclined posture due to the height change design, thereby providing an inclined mounting position for the water pump motor when the motor mounting portion 1211 is disposed on the base.

[0040] The motor mounting base 121 also includes a base 1212 and a support portion 1213 connecting the base 1212. The motor mounting portion 1211 is disposed on the base 1212 along the height direction of the base 1212. The base 1212 itself is set at the same height to ensure the uniformity of the motor mounting portion 1211 in the height direction of the base 1212, providing a stable support platform for the installation of the water pump motor. The bottom of the support portion 1213 is connected to the housing 11, and the top of the support portion 1213 is connected to the base 1212. Through the synergistic effect of the base 1212 and the support portion 1213, the driving reaction force generated by the water pump motor during operation can be effectively borne, avoiding performance degradation caused by structural deformation or stress concentration. The height of the support part 1213 decreases along the direction from the head to the tail of the housing 11. When the support part 1213 is installed on the housing 11, the top surface of the equal-height base 1212 connected to the top of the support part 1213 tilts accordingly, thereby lowering the height of the motor mounting part 1211 on the base 12 along the direction from the head to the tail of the housing 11. This causes the drive shaft and impeller of the water pump motor to tilt towards the tail of the housing 11, so that the water flow is discharged obliquely from the water outlet structure 111 towards the rear of the pool cleaning robot 10. The front-to-back height difference of the support part 1213 can be designed as needed according to the shape of the housing 11 and the requirements of hydrodynamics. For example, if the length from the head to the tail of the housing 11 is long, the front-to-back height difference of the support part 1213 can be appropriately reduced to ensure structural stability. If a more significant rearward water discharge effect is required, the front-to-back height difference of the support part 1213 can be appropriately increased.

[0041] In this embodiment, the motor mounting base 121 further includes a base 1212 and a support portion 1213 connecting the base 1212. The base 1212 is set at the same height, and the motor mounting portion 1211 is disposed on the base 1212 along the height direction of the base 1212. The height of the support portion 1213 decreases along the direction from the head to the tail of the housing 11, and the support portion 1213 is connected to the housing 11. Through the design of the base 1212 and the support portion 1213 connecting the base 1212, good support can be provided for the installation of the water pump motor, effectively bearing the driving reaction force generated by the water pump motor during operation, and increasing the installation distance between the water pump motor and the housing 11, extending the transmission path of the reaction force, so that the vibration energy is dispersed and dissipated in the structure more quickly, significantly reducing the vibration transmission of the water pump motor to the housing 11 during operation, thereby reducing the overall operating noise and extending the service life of the equipment. Meanwhile, by changing the height of the support 1213, the water flow can be tilted and discharged towards the rear of the pool cleaning robot 10, thereby improving the cleaning efficiency and reliability of the pool cleaning robot 10.

[0042] In one possible implementation, such as Figure 4As shown, the base 1212 is a columnar structure. The motor mounting part 1211 includes a mounting groove 1221 and a connecting structure 1222. The mounting groove 1221 is arranged along the height direction of the columnar structure. The connecting structure 1222 is located at the end of the columnar structure and is close to the opening of the mounting groove 1221. The water pump motor is installed in the mounting groove 1221 and is connected to the connecting structure 1222.

[0043] The base 1212 is a columnar structure, and the motor mounting part 1211 consists of a mounting groove 1221 and a connecting structure 1222. The mounting groove 1221 is located along the height of the columnar base 1212, and its cross-sectional shape matches the outline of the water pump motor, forming a nested positioning fit. The water pump motor is installed in the mounting groove 1221, and the outer shell of the water pump motor fits against the inner wall of the mounting groove 1221 to enhance the stability of the water pump motor during operation. The connecting structure 1222 is located at the end of the columnar structure, i.e., the top of the base 1212, and the connecting structure 1222 is close to the opening of the mounting groove 1221 to shorten the lever arm length between the water pump motor and the motor mounting base 121, reduce the torque effect during operation, and thus reduce fatigue damage to the base 1212. In one example, the connecting structure 1222 is a multi-point distributed array of bolt holes, which, through mechanical dispersion design, uniformly transmits the vibration energy of the motor to the base 1212, avoiding structural failure caused by local stress concentration.

[0044] In this embodiment, the base 1212 is a columnar structure. The motor mounting part 1211 includes a mounting groove 1221 and a connecting structure 1222. The mounting groove 1221 is arranged along the height direction of the columnar structure, and the connecting structure 1222 is located at the end of the columnar structure, close to the opening of the mounting groove 1221. The water pump motor is installed in the mounting groove 1221 and connected to the connecting structure 1222. By providing axial positioning for the water pump motor through the mounting groove 1221 in the height direction of the columnar base 1212, and by ensuring radial constraint of the water pump motor through the connecting structure 1222, multi-dimensional constraints on motor installation can be achieved, improving the system's sealing and vibration resistance, thereby enhancing the reliability of system operation.

[0045] In one possible implementation, such as Figure 3As shown, the support portion 1213 includes multiple legs 1223. A portion of the legs 1223 is located on a first side of the base 1212, and another portion is located on a second side of the base 1212. The first and second sides are opposite to each other. The legs 1223 on the same side are arranged along a predetermined direction, and their support height gradually decreases along the predetermined direction. The height and shape of the legs 1223 on the first side are symmetrically arranged to the height and shape of the legs 1223 on the second side. The legs 1223 are connected to the housing 11. The first and second sides correspond to the left and right sides of the housing 11, respectively, and the predetermined direction is the horizontal direction of the housing 11 from head to tail.

[0046] The support 1213 consists of multiple legs 1223. The top of the legs 1223 is connected to the base 1212, and the bottom of the legs 1223 is connected to the housing 11. The height and shape of the multiple legs 1223 are symmetrically distributed along the left and right sides of the base 1212. That is, some of the multiple legs 1223 are located on the left side of the base 1212 on the housing 11, and other parts of the multiple legs 1223 are located on the right side of the base 1212 on the housing 11. This symmetrical layout ensures the force balance of the base 1212 within the housing 11. The support legs 1223 on the same side are arranged horizontally from the head to the tail of the housing 11, and the support height of the support legs 1223 on the same side gradually decreases from the head to the tail of the housing 11. That is, the support legs 1223 near the head of the housing 11 are the highest, and as they extend towards the tail of the housing 11, the height of the support legs 1223 gradually decreases, and the support legs 1223 near the tail of the housing 11 are the lowest. This makes the support part 1213 installed after the housing 11 forms a structure that is inclined towards the tail of the housing 11.

[0047] In this embodiment, the support portion 1213 includes a plurality of legs 1223. A portion of the legs 1223 is disposed on a first side of the base 1212, and another portion of the legs 1223 is disposed on a second side of the base 1212. The first side and the second side are opposite sides. The legs 1223 on the same side are arranged along a preset direction, and the support height of the legs 1223 on the same side gradually decreases along the preset direction. The height shape of the legs 1223 on the first side and the height shape of the legs 1223 on the second side are symmetrically arranged. The legs 1223 are connected to the housing 11. The first side and the second side correspond to the left and right sides of the housing 11, respectively, and the preset direction is the horizontal direction of the housing 11 from the head to the tail. The symmetrical distribution of multiple legs 1223 reduces the contact area between the motor mount 121 and the housing 11, effectively lowering the frictional resistance and heat transfer efficiency between them. This reduces mechanical wear caused by long-term operation and prevents structural deformation due to localized stress concentration. Furthermore, the gradual decrease in height of the legs 1223 along the horizontal direction of the housing 11 from head to tail allows water to be discharged at an angle towards the rear of the pool cleaning robot 10, improving its efficiency and reliability.

[0048] In one possible implementation, such as Figure 3 As shown, the support leg 1223 is a plate-shaped support leg, and there are two plate-shaped support legs 1223. The two plate-shaped support legs 1223 are respectively arranged on the first side and the second side. Each plate-shaped support leg 1223 extends along a preset direction, and the surface height dimension of each plate-shaped support leg 1223 gradually decreases along the preset direction.

[0049] The support legs 1223 adopt a plate-like structure, and the base 1212 of the motor mounting bracket 121 is connected to the housing 11 through two plate-like support legs 1223. The two plate-like support legs 1223 are symmetrically distributed on the left and right sides of the base 1212, respectively. Each plate-like support leg 1223 extends horizontally from the head to the tail of the housing 11, and the surface height of each plate-like support leg 1223 gradually decreases from the head to the tail of the housing 11, so that the support part 1213 forms a structural shape that slopes towards the tail of the housing 11 after being installed in the housing 11. The plate-like support legs 1223 adopt a continuously extending plate-like structure, and the support height decreases through a gradual change in height. The bottom of each plate-like support leg 1223 is fixedly connected to the bottom of the housing 11 by welding or screwing.

[0050] In this embodiment, the support leg 1223 is a plate-shaped support leg 1223, and there are two plate-shaped support legs 1223. The two plate-shaped support legs 1223 are respectively disposed on the first side and the second side. Each plate-shaped support leg 1223 extends along a preset direction, and the surface height dimension of each plate-shaped support leg 1223 gradually decreases along the preset direction. By having two symmetrically arranged plate-shaped support legs 1223 bear the weight load of the base 1212, it is possible to ensure the force balance of the motor mounting seat 121 within the housing 11. Furthermore, by using only one continuously extending plate-shaped support leg 1223 on each side of the base 1212, the structure of the support part 1213 can be simplified, and the assembly complexity can be reduced. In addition, the surface height dimension of each plate-shaped support leg 1223 gradually decreases along the horizontal direction from the head to the tail of the housing 11, which allows the water flow to be discharged at an angle towards the rear of the pool cleaning robot 10, thereby improving the efficiency and reliability of the pool cleaning robot 10.

[0051] In one possible implementation, such as Figure 3 As shown, a gap is provided between the first support leg 1223 and the second support leg 1223 to form a water passage between the two support legs 1223, and the water inlet structure is located on the water guide path of the water passage. The motor mounting base 121 also includes a guide surface 1214. The guide surface 1214 is connected to the support leg 1223 and is disposed at the water outlet of the water passage. The guide surface 1214 extends from the side of the support leg 1223 near the water outlet in a direction away from the water passage.

[0052] A gap is provided between one or more legs 1223 on the left side of the base 1212 and one or more legs 1223 symmetrically distributed on the right side of the base 1212. The gap between the legs 1223 on both sides of the base 1212 forms a water passage, which runs through the front and rear sides of the base 1212 to form a water guiding path. The water inlet structure on the housing 11 is located on the water guiding path of the water passage. When the pool cleaning robot 10 is running, the pool water, driven by the impeller, enters the housing 11 through the water inlet structure, and is guided to the center of the impeller through the water guiding path of the water passage and the water passage structure on the impeller cover 122. After being pressurized by the impeller, it is discharged at an angle towards the tail of the housing 11. The water inlet structure can be located at any position on the water guiding path of the water passage.

[0053] The motor mounting base 121 is also provided with one or more guide surfaces 1214. The guide surfaces 1214 are connected to the support legs 1223 and are disposed at the water inlets of the water passage. The water inlets where the guide surfaces 1214 are disposed include at least one water inlet where the water passage is located on the front side of the base 1212 and at least one water inlet where the water passage is located on the rear side of the base 1212. The guide surfaces 1214 extend from the side of the support legs 1223 near the water inlets in a direction away from the water passage to guide water flow along the guide surfaces 1214 into the water passage structure.

[0054] In this embodiment, a gap is provided between the first-side support leg 1223 and the second-side support leg 1223 to form a water passage between the two support legs 1223, and the water inlet structure is located on the water guide path of the water passage. The motor mounting base 121 also includes a flow guide surface 1214. The flow guide surface 1214 is connected to the support leg 1223 and is disposed at the water outlet of the water passage. The flow guide surface 1214 extends from the side of the support leg 1223 near the water outlet in a direction away from the water passage. By forming a water passage by providing a gap between the support legs 1223 on both sides of the base 1212, a continuous and low-resistance flow path can be provided for the water flow, so that the water flow can flow smoothly along the water passage after entering the housing 11, avoiding energy loss caused by structural obstruction or tortuous path. Furthermore, by guiding the water flow through the guide surface 1214, the turbulence and vortex generated when the water flow hits the support leg 1223 can be reduced, allowing the water flow to enter the water passage structure of the impeller cover 122 more concentratedly. This can improve the stability of the water flow and reduce the loss of water kinetic energy, thereby improving the smooth operation and work efficiency of the pool cleaning robot 10.

[0055] In one possible implementation, the motor mounting part 1211 is disposed on the top of the motor mounting base 121, and a plurality of guide ribs 13 are provided on the side wall of the motor mounting base 121. The plurality of guide ribs 13 are arranged circumferentially along the side wall of the motor mounting base 121, and each guide rib 13 extends from the bottom of the motor mounting base 121 toward the motor mounting part 1211.

[0056] Multiple flow guide ribs 13 are provided on the side wall of the motor mounting base 121. The multiple flow guide ribs 13 are evenly or regularly spaced along the circumference of the side wall of the motor mounting base 121. Each flow guide rib 13 extends from the bottom of the motor mounting base 121 toward the motor mounting part 1211 at the top of the motor mounting base 121. The flow guide ribs 13 can be designed as continuous straight lines or as curves with a certain curvature to better conform to the natural flow trajectory of water.

[0057] In this embodiment, the motor mounting part 1211 is disposed on the top of the motor mounting base 121. Multiple guide ribs 13 are provided on the side wall of the motor mounting base 121, arranged circumferentially along the side wall of the motor mounting base 121, with each guide rib extending from the bottom of the motor mounting base 121 toward the motor mounting part 1211. Through the structural design of the guide ribs 13, not only can the structural strength of the motor mounting base 121 be strengthened, but also, during the operation of the water pump motor, the water flow can be uniformly guided circumferentially to the water passage structure of the impeller cover 122, avoiding pressure fluctuations caused by localized concentrated impacts, thereby improving the reliability and working efficiency of the pool cleaning robot 10.

[0058] Regarding the above embodiments, it should be noted that the shape of the water pump motor mount 121 is not limited to the above example. As long as the motor mounting position of the motor mounting part 1211 is set along the height direction of the water pump motor mount 121, the shape design of the water pump motor mount 121 is such that the motor mounting position has the expected tilt orientation. For example, the base 1212 can also be designed so that the height dimension decreases along the direction from the head to the tail of the housing 11, and the support part 1213 is set at the same height, as long as the shape design of the water pump motor mount 121 allows the motor mounting part 1211 to be tilted to install the water pump motor.

[0059] In one possible implementation, the impeller shroud 122 includes a guide section 1221 and a fixing section 1222, and an impeller shroud connecting section 1215 is provided on the motor mounting base 121. The guide section 1221 is a downward-opening cylindrical shape. The lower part of the guide section 1221 is configured as a grid-like inlet for the water passage structure, and the top of the guide section 1221 is provided with multiple through holes as the outlet for the water passage structure. The through holes penetrate the upper and lower surfaces of the top of the guide section 1221. The fixing section 1222 is provided on the outer side of the guide section 1221 and is connected to the impeller shroud connecting section 1215.

[0060] The impeller cover 122 consists of a flow guide 1221 and a fixing part 1222. The flow guide 1221 of the impeller cover 122 is a downward-opening cylindrical shape to cover the motor mounting part 1211 and the impeller. The lower part of the flow guide 1221 is configured as a grid-like inlet for the water inlet of the water passage structure, and the top of the flow guide 1221 is provided with multiple through holes penetrating the upper and lower surfaces of the top of the top flow guide 1221 as the water outlet of the water passage structure. Driven by the impeller, the water flows from the grid-like structure at the bottom of the flow guide 1221 into the impeller inside the flow guide 1221. After being pressurized by the impeller, the water is discharged obliquely towards the tail of the casing 11 through the through holes at the top of the flow guide 1221. A fixing part 1222 is provided on the outer side of the impeller cover 122 guide section 1221. The fixing part 1222 is connected to the impeller cover connecting part 1215 on the motor mounting base 121 by means of threads, snaps or welding.

[0061] In this embodiment, the impeller cover 122 includes a flow guide 1221 and a fixing part 1222, and an impeller cover connecting part 1215 is provided on the motor mounting base 121. The flow guide 1221 is a cylindrical shape with its opening facing downwards. The lower part of the flow guide 1221 is configured as a grid-like inlet for the water passage structure, and the top of the flow guide 1221 is provided with multiple through holes as the water passage structure outlet. The through holes penetrate the upper and lower surfaces of the top of the flow guide 1221. The fixing part 1222 is provided on the outer side of the flow guide 1221 and is connected to the impeller cover connecting part 1215. The grid-like inlet at the bottom of the flow guide 1221 provides an entry path for the water flow while intercepting large particles, effectively preventing impeller blockage and wear. The multi-hole outlet at the top of the flow guide 1221 allows the water flow to be discharged evenly, reducing noise and outlet turbulence. The fixing part 1222 is tightly connected to the motor mounting base 121, which ensures the precise positioning and stable installation of the impeller cover 122, effectively suppresses operating vibration, and facilitates maintenance and disassembly. The impeller cover 122 as a whole can achieve efficient water flow guidance and protect the impeller and motor mounting part 1211, thereby improving the reliability and working efficiency of the pool cleaning robot 10.

[0062] In another preferred embodiment, the motor mounting base 121 is not tilted; instead, the motor mounting portion 1211 is tilted relative to the motor mounting base 121 to provide an inclined mounting position for the water pump motor. In this embodiment, the motor mounting portion 1211 includes a motor mounting shaft, which, when assembled, coincides with the axis of the water pump motor (or the rotation axis of the impeller). The motor mounting portion 1211 is positioned on the motor mounting base at an angle extending along the tilt direction of the motor mounting shaft, wherein this tilt direction is tilted from bottom to top relative to the vertical direction (i.e., the direction perpendicular to the horizontal plane when the pool cleaning robot is placed on a horizontal plane) toward the tail of the housing 11. This embodiment will now be described in detail with reference to an example structure of the motor mounting base 121:

[0063] The motor mounting base 121 also includes a base 1212 and a support portion 1213 connecting the base 1212. The support portion 1213 is set at the same height, with its bottom connected to the housing 11 and its top connected to the bottom of the base 1212. The motor mounting portion 1211 is disposed on the base 1212 and is configured to allow the water pump motor to be mounted on the base 1212 in an inclined direction, wherein the inclined direction is such that the axis of the water pump motor is inclined from bottom to top relative to the vertical direction toward the tail of the housing 11. Specifically, when the base 1212 is a vertically arranged column structure, the motor mounting portion 1211 is inclinedly disposed on the base 1212. For example, when the motor mounting portion 1211 still includes Figure 4As shown in the mounting groove 1221 and connecting structure 1222, the axis of the mounting groove 1221 is inclined, and the support surface of the connecting structure 1222 is inclined relative to the horizontal direction. The height of the support surface gradually decreases relative to the housing 11 from the side closer to the head to the side closer to the tail. As a result, the axis of the water pump motor mounted on the motor mounting part 1211 is inclined from bottom to top relative to the vertical direction toward the tail of the housing 11, causing the impeller connected to the drive shaft of the water pump motor to be in an inclined state. As a result, when the impeller rotates at high speed, the impeller blades guide the water flow from the water outlet structure 111 toward the inclined direction, i.e., the rear of the pool cleaning robot 10, and discharge it at an incline.

[0064] In this embodiment, the motor mounting part 1211 includes a motor mounting shaft. The motor mounting part 1211 is mounted on the motor mounting base 121 at an angle extending in an inclined direction relative to the vertical direction, from bottom to top towards the tail of the housing 11. By designing the motor mounting part 121 to be inclined relative to the horizontally level motor mounting base 121, an inclined mounting position can be provided for the water pump motor. This allows the drive shaft of the water pump motor and the impeller connected to the drive shaft to be inclined towards the tail of the housing 11, so that water flows out from the outlet structure 111 towards the rear of the pool cleaning robot 10, thereby improving the cleaning efficiency and reliability of the pool cleaning robot 10.

[0065] It should be noted that, depending on the implementation needs, the various components / steps described in the embodiments of this application can be broken down into more components / steps, or two or more components / steps or parts of the operation of components / steps can be combined into new components / steps to achieve the purpose of the embodiments of this application.

[0066] Those skilled in the art will recognize that the units and method steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this application.

[0067] The above embodiments are only used to illustrate the embodiments of this application, and are not intended to limit the embodiments of this application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of this application. Therefore, all equivalent technical solutions also fall within the scope of the embodiments of this application, and the patent protection scope of the embodiments of this application should be defined by the claims.

Claims

1. A swimming pool cleaning robot, characterized in that, The pool cleaning robot includes a housing, an electrical sealing chamber and a suction assembly disposed in the inner cavity of the housing. The housing is provided with a water inlet structure and a water outlet structure, which are respectively connected to the inner cavity and the outside. The water outlet structure is disposed in the upper part of the housing. The suction assembly is disposed independently of the electrical sealing chamber. The suction assembly includes: a motor mounting base, a water pump motor, an impeller, and an impeller cover; The motor mounting base is connected to the housing, and the motor mounting base is provided with a motor mounting part; The water pump motor is fixed to the motor mounting base via the motor mounting part, and the drive shaft of the water pump motor is connected to the impeller; The impeller cover is connected to the motor mounting base, and the impeller cover covers the impeller. The impeller cover is provided with a water-passing structure. The water outlet structure and the motor mounting part are coaxially arranged, and the axis of the motor mounting part is inclined from bottom to top towards the tail of the casing relative to the vertical direction, so that the impeller can drive the water flow to be discharged from the water outlet structure towards the rear of the pool cleaning robot.

2. The pool cleaning robot according to claim 1, characterized in that, The motor mounting part extends along the height direction of the motor mounting base, and the height of the motor mounting part decreases from the head to the tail of the housing.

3. The swimming pool cleaning robot of claim 2, wherein, The motor mounting base further includes: a base and a support portion connecting the base; The base is set at the same height, and the motor mounting part is set on the base along the height direction of the base; The height of the support decreases from the head to the tail of the housing, and the support is connected to the housing.

4. The pool cleaning robot according to claim 3, characterized in that, The base is a columnar structure. The motor mounting part includes a mounting groove and a connecting structure. The mounting groove is arranged along the height direction of the columnar structure. The connecting structure is located at the end of the columnar structure and is close to the opening of the mounting groove. The water pump motor is installed in the mounting groove and is connected to the connecting structure.

5. The swimming pool cleaning robot of claim 3, wherein, The support includes a plurality of legs, a portion of which is disposed on a first side of the base side portion, and another portion of which is disposed on a second side of the base side portion, wherein the first side and the second side are opposite sides; The legs on the same side are arranged in a preset direction, and the support height of the legs on the same side gradually decreases along the preset direction; The height and shape of the support leg on the first side and the height and shape of the support leg on the second side are symmetrically arranged; The support leg is connected to the housing; Wherein, the first side and the second side correspond to the left and right sides of the casing, respectively, and the preset direction is the horizontal direction of the casing from the head to the tail.

6. The swimming pool cleaning robot of claim 5, wherein, The support leg is a plate-shaped support leg, and there are two plate-shaped support legs. The two plate-shaped support legs are respectively disposed on the first side and the second side. Each plate-shaped support leg extends along the preset direction, and the surface height dimension of each plate-shaped support leg gradually decreases along the preset direction.

7. The pool cleaning robot according to claim 5, characterized in that, A gap is provided between the support leg on the first side and the support leg on the second side so as to form a water passage between the two support legs, and the water inlet structure is located on the water guiding path of the water passage; The motor mounting base further includes: a flow guide surface; The guide surface is connected to the support leg and is disposed at the water outlet of the water passage; The guide surface extends from the side of the support near the water inlet in a direction away from the water passage.

8. The swimming pool cleaning robot of claim 1, wherein, The motor mounting part is disposed on the top of the motor mounting base. The side wall of the motor mounting base is provided with a plurality of guide ribs. The plurality of guide ribs are arranged circumferentially along the side wall of the motor mounting base, and each guide rib extends from the bottom of the motor mounting base toward the motor mounting part.

9. The swimming pool cleaning robot of claim 1, wherein, The impeller cover includes a flow guide and a fixing part, and the motor mounting base is provided with an impeller cover connecting part; The flow guide is a cylindrical part with an opening facing downwards. The lower part of the flow guide is set as a grid as the water inlet of the water passage structure. The top of the flow guide is provided with multiple through holes as the water outlet of the water passage structure. The through holes penetrate the upper and lower surfaces of the top of the flow guide. The fixing part is disposed on the outer side of the flow guide part, and the fixing part is connected to the impeller cover connecting part.

10. The swimming pool cleaning robot of claim 1, wherein, The motor mounting part includes a motor mounting shaft, and the motor mounting part is disposed on the motor mounting base at an angle with the motor mounting shaft extending in an inclined direction, wherein the inclined direction is inclined from bottom to top relative to the vertical direction toward the tail of the housing.

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